Longitudinal research following thousands of U.S. students from eighth to twelfth grade reveals that assignment to a __________ track accelerates academic progress

Which of the following accounts for our diversity of emotional experiences?

A. evolution B. culture C. biology D. genes

Until the 1960s, __________ in Western nations was largely limited to low-SES adults

A) singlehood B) cohabitation C) marrying young D) having children before age 25